A major function of magnesium in plants is to be _____
A) required to regenerate phosphoenolpyruvate in C4 and CAM plants
B) a component of DNA and RNA
C) a component of chlorophyll
D) active in amino acid formation
C
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When a plant cell is placed in a hypotonic solution, the cell wall prevents ____
a. plasmolysis b. diffusion c. active transport d. the cell from bursting e. the cell from shrinking
The cell in micrograph "I" is at which stage of
the cell cycle?
a. prophase b. telophase c. interphase d. anaphase e. metaphase
What is the main cause of cancer?
A. DNA replication no longer working properly B. Old age, during which the cells of the body no longer work properly C. Exposure to carcinogens in the environment D. We do not currently know the main cause of cancer.
Which of the following statements is true of archegonia?
A) They are the sites where male gametes are produced. B) They may temporarily contain sporophyte embryos. C) They are the same as sporangia. D) They are the ancestral versions of animal gonads. E) They are asexual reproductive structures.